Date: Sat, 24 Dec 2011 16:53:22 +0200 From: Maxim Ignatenko <gelraen.ua@gmail.com> To: Chris Rees <crees@freebsd.org> Cc: freebsd-rc@freebsd.org Subject: Re: conf/163508: [rc.subr] [patch] Add "enable" and "disable" commands to rc.subr Message-ID: <CABWTX-bSa4B26g74mrYAZXym--HYWYMy7O_kdCRqTPR8W75O_g@mail.gmail.com> In-Reply-To: <CADLo83-SK%2Bo0b9GysjhH0N=TxsZXLRAuKL-n%2Btt6%2BCcr1gAJWQ@mail.gmail.com> References: <201112241230.pBOCUF3h064098@freefall.freebsd.org> <CADLo83-SK%2Bo0b9GysjhH0N=TxsZXLRAuKL-n%2Btt6%2BCcr1gAJWQ@mail.gmail.com>
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On 24 December 2011 15:15, Chris Rees <crees@freebsd.org> wrote: > On 24 December 2011 12:30, Maxim Ignatenko <gelraen.ua@gmail.com> wrote: >> The following reply was made to PR conf/163508; it has been noted by GNA= TS. >> >> From: Maxim Ignatenko <gelraen.ua@gmail.com> >> To: Doug Barton <dougb@freebsd.org> >> Cc: bug-followup@freebsd.org >> Subject: Re: conf/163508: [rc.subr] [patch] Add "enable" and >> =C2=A0"disable" commands to rc.subr >> Date: Sat, 24 Dec 2011 14:20:19 +0200 >> >> =C2=A0On 24 December 2011 04:15, Doug Barton <dougb@freebsd.org> wrote: >> =C2=A0> This idea has been considered before and rejected because it's t= oo >> =C2=A0> difficult to catch all the corner cases, and actually editing a = config >> =C2=A0> file is not really all that hard of a thing to do. >> =C2=A0> >> >> =C2=A0The idea was to make enabling/disabling services less error-prone.= It >> =C2=A0don't need to catch _all_ corner cases, because if administrator d= o >> =C2=A0something unusual with startup configuration he should be able to >> =C2=A0manipulate it in proper way, or even have tools that do something >> =C2=A0similar. >> =C2=A0Proposed patch handles /etc/rc.conf, /etc/rc.conf.local and >> =C2=A0/etc/rc.conf.d/* properly (I hope), so it should fit nicely in 95%= of >> =C2=A0cases. >> =C2=A0Doing `service someserive enable` is much faster and less error-pr= one >> =C2=A0that `service someservice rcvar ; echo someservicercvar_enable=3DY= ES >> >> =C2=A0/etc/rc.conf` > > Disagree, sorry. > > If we're going to implement these ideas we should do it properly, not > for 95% of cases. > It's impossible to handle all cases. For example, how this can be detected and properly altered without bloating code: for c in n a m e d _ e n a b l e; do var=3D${var}${c} done for c in y e s; do val=3D${val}${c} done eval ${var}=3D\$${val} Since proposed patch adds variable to last included file, it will not actually work only if user changed /etc/rc.subr to include one more file after /etc/rc.conf.d/${name}. So, while /etc/rc.subr is unmdified, it will do the job.
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